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Hi all! The past year, in the little spare time I had as a father of a 1-year old, I made illustrations of Moroccan dinosaurs on my iPad. I have shared some of these on this forum before, but I made some changes (hopefully improvements) to most of these, and some of them I have not shared before. The animals are all based on the designs of the Kem Kem dinosaur poster I made last year. Here is the complete set: Spinosaurus aegyptiacus Deltadromeus agilis Carcharodontosaurus saharicus Rebbachisaurus garasbae Rugops primus Some dromaeosaurids Some sauropods
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Bones from Bone Cabin Quarry Can anyone please help me identify them? Many thanks in advance.
Gordon Johnston posted a topic in Fossil ID
Hi. Thanks in advance for help from anyone. I recently bought these bones from someone with access to Bone Cabin Quarry, I am 100% confident these came from there. I can tell that some look like limb bones, #3 looks to me like part of a sauropod vertebra (but I could be wrong). I am fairly new at this. The person said the other Jurassic dinosaurs from the general area included Sauropods: Diplodocus, Camarasaurus, Apatosaurus, also Allosaurus and Stegosaurus. There are 15 bones in the photos, numbered 1-15. If anyone can tell me with any reasonable confidence about any of these, and how they know (I want to learn), it would be a valuable learning experience for me. I forgot to put in a ruler, but the box is 16" by 12". I do appreciate it! Gordon- 3 replies
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Could Sauropods have actually been really aggressive?
jikohr posted a topic in General Fossil Discussion
Hi everyone! I've been wondering this for a while and am curious if this has ever been proposed in major discourse or publications. Every time I see Sauropods depicted whether it's a movie or a documentary they are always depicted as gentle giants, basically herbivorous land whales. You leave them alone and they leave you alone. But as far as I know with modern animals, the herbivores are usually the most dangerous. Elephants and Hippos are often used as modern analogs since they are substantially larger than any predator around and they kill more people than the apex predator of their ecosystems and are know to be really aggressive even though their size should be enough to protect them most of the time. Could the same have been true for Sauropods? Obviously we will never know for certain since we can't observe these animals and of course there are major differences between them and large mammals, mostly the large mammals being substantially more intelligent, but then could it be argued that an animal that relied more on instinct could be more aggressive since it wouldn't be as capable of decision making and would just have a knee jerk response upon seeing a predator? Kinda like a cat with a laser pointer except it's a 40 ton dinosaur going Incredible Hulk almost every time it sees a Theropod and just immediately running over and stomping on it. There's a lot of "coulds" in all that I know. I guess this is more of a question of has the idea of aggressive Sauropods ever been something considered by the scientific community, and if it was dismissed than why? Any insight is appreciated as always!- 13 replies
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Ever Wonder Which Morrison Dinosaurs were most Abundant?
Troodon posted a topic in Questions & Answers
Ever wonder which Jurassic dinosaurs in the Morrison Formation were most abundant? Well at least those collected. Dr Susie Maidment posted this on twitter "Hey Morrison Formation fans! Ever wondered what the most abundant dinosaurs in the formation were, based on PBDB data? I did, and I plotted it" Looks like the winners were, no surprise Sauropod: Camarasaurus Theropod: Allosaurus Ornithischians: Stegosaurs- 15 replies
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Hello! I am interested in purchasing this sauropod tooth labeled as a Camarasaurus from Kaycee county Wyoming. This tooth looks very odd to me and doesn’t really look like a Camarasaurus. If it is a Camaroasaurus more information on the species and where the tooth was in the jaw would be great! Thank you!
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Paper by Phil Mannion et al. that supports the validity of the 24 recognized Sauropod species in the Morrison Formation. Some authors have suggested this number is well overestimated and represent growth series. https://royalsocietypublishing.org/doi/10.1098/rsos.210377
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Analysis of anatomical changes and Neck angle https://www.nature.com/articles/s41598-020-63439-0
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An interesting article that discusses the “Golden Age” of sauropods, the Morrison Formation is reported to have yielded 13 genera and 24 species of sauropods. For collectors makes identification of teeth a pretty daunting task... Paper. https://giw.utahgeology.org/giw/index.php/GIW/article/view/42
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Hi I’m wondering are there any Sauropods found in Canada (Alberta)? Wouldn’t it be possible to have Sauropods in Canada? Is there anything found? Thank you!!
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A short paper and article on sauropod teeth from North Africa. Nothing new just more info. Paper https://www.researchgate.net/publication/338689936_Sauropod_dinosaur_fossils_from_the_Kem_Kem_and_extended_'Continental_Intercalaire'_of_North_Africa_A_review Article: https://theconversation.com/what-we-learned-from-dinosaur-teeth-in-north-africa-130894
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Trackways in Texas show Sauropods may have waded on two front legs. Not the first time this has been seen either. I wonder if that's why brachiosaurus's front legs were so long? https://www.newscientist.com/article/2231408-dinosaur-tracks-seem-to-show-giant-sauropod-wading-on-two-front-legs/amp/
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Carter and I are starting to slowly begin work on a program that will be about Jurassic era Dinosaurs. We will not do this until the 2020/2021 school year and I am really pretty excited. We decided to stop pursuing other dinosaur fossils (except for a Hell Creek Anky/Nodo lol) so that we can start piecing this together. We have about 10 months to make this happen. Educationally speaking it will be awesome to focus a program on the Jurassic era and show kids what dinosaurs were really running around at this time. This presents some fun challenges for us as collectors. Morrison Formation fossils are harder to find and more expensive so this will be a pretty significant change in how we collect. We can bargain shop to some extent but we will have to get into a higher price range. Carter and I know we have to save our money and be patient. We will also have a much more limited number of sources which I am actually okay with. I really like our primary source for Jurassic stuff. I have to get familiar with this fossil material so I have to find and study whatever publications exist but this is something I really like. We may also take a look at a European Dino or two. I have seen some Sauropod fossils from the UK and some stuff from Portugal that was interesting though pricey. We have yet to hop across the pond for dinos yet but if we are ever going to do that, this would be the program to do it I think. We have a head start on this. We have our nice Diplodocus bone. We have a couple of nice Camarasaurus pieces too. We have a small piece of Stegosaur gular armor. We also have a partial Theropod tooth, sold as Allosaurus but in need of a closer look. It is not a lot of material for sure but we can build from what we have and develop a really solid program I think. Presenting a fairly complete fauna will be hard. The herbivores I am not too worried about. I have a line on a Camptosaurus piece and I am sure we can track down another nice large Sauropod fossil. Dryosaurus is another possibility. The Theropod material is quite intimidating though. Rare and expensive is my first impression. I am not too worried about Allosaurus but beyond that, I think it will be really challenging to find any other fossils in our price range. I think we need fossils from two large bodied and one medium or small theropod to really present a decent picture of the ecosystem. Tall order but I am hopeful we can do it. We have do have a long way to go with this for sure but we made a little progress. Literally speaking we made a tiny bit of progress but it is a pretty cool addition despite the diminutive nature of the fossil We secured ourselves a tiny 2mm Ornithopod tooth that could belong to Nanosaurus. We had asked @Troodon about this one awhile ago and that was his opinion. I finally got around to grabbing it. Nanosaurus is a great dinosaur to include for us because they were tiny and pretty cute. It will represent a great contrast with the giant dinosaurs of this era. Kids will love it. It was also in the bargain category price wise. We may not get to update this for awhile but I thought starting the TFF collection now would be a fun way to celebrate our tiny new fossil.
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- jurassic dinosaurs
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New dinosaur found hiding in plain sight in South African museum
Jaimin013 posted a topic in Fossil News
https://www.theguardian.com/science/2019/aug/05/new-dinosaur-found-hiding-in-plain-sight-in-south-african-museum?CMP=share_btn_fb&fbclid=IwAR2c3PJ3Rm2OSSY57BvPQt7tivNYZySy87Vw1OtHRgJCrj9gV3w3IwGP-mU- 2 replies
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https://www.france24.com/en/20190204-dinosaur-defended-itself-with-spiny-backbone-found-patagonia https://paleonerdish.wordpress.com/2019/02/04/introducing-bajadasaurus-pronuspinax/ http://novataxa.blogspot.com/2019/02/bajadasaurus.html
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https://phys.org/news/2018-11-ancient-skeletons-ancestors-giant-dinosaurs.html https://www.express.co.uk/news/world/1048164/dinosaur-discovery-brazil-Royal-Society-social-life-Biology-Letters-santa-maria-university http://blogs.discovermagazine.com/deadthings/2018/11/20/dinosaur-brazil/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A DiscoverBlogs (Discover Blogs)
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https://www.bbc.co.uk/newsround/45719806 https://www.newshub.co.nz/home/world/2018/10/first-true-giant-12-tonne-jurassic-dinosaur-discovered-in-south-africa.html
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http://novataxa.blogspot.com/2018/09/yizhousaurus.html http://www.bernama.com/en/world/news.php?id=1642227
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http://www.dailymail.co.uk/sciencetech/article-6078665/First-dinosaur-footprints-mainland-Scotland-left-Long-necked-sauropods.html https://www.huffingtonpost.co.uk/entry/new-dinosaur-footprints-are-first-evidence-of-prehistoric-beasts-on-scottish-mainland_uk_5b7ac640e4b018b93e95fd96?guccounter=1&guce_referrer_us=aHR0cDovL2MubmV3c25vdy5jby51ay9BLzk1MDk4Nzc5MT8tMTcwMTI6MzE3Nw&guce_referrer_cs=IiuhhI65aC5Eez4WyhZbfg https://www.bbc.co.uk/news/uk-scotland-highlands-islands-45246169
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https://metro.co.uk/2018/07/09/huge-gentle-giant-dinosaur-size-double-decker-bus-discovered-argentina-7695748/ http://www.dailymail.co.uk/sciencetech/article-5934365/A-dinosaur-big-double-decker-bus-roamed-Earth-200-million-years-ago-unearthed.html
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I've been reading a few papers on Sauropods and the topic of wear facets got me thinking. I own 30 plus Rebbachisaurus teeth and only two of them have labial wear facets. Every other tooth with a wear facet has a lingual wear facet. That doesn't really make any sense to me. For most sauropods with tooth to tooth contact, the upper teeth will have a lingual wear facet and the lower teeth will have labial. It could be that I just happen to own mostly upper teeth but I don't think so. Most every Rebbachisaurus tooth you see has a lingual wear facet. Any thoughts on that.
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Dinosaur material from Uzbekistan is becoming a bit more available to the collector. Most of the material being offered for sale are theropod teeth with the occasional claw, see my post from earlier this year. Sauropod material has yet to hit the market but my bet is that will change if there is a profit to be made. A new paper that will soon be published identifies teeth from several countries in Central Asia including Uzbekistan. The material shown below comes from the same towns and formation the theropod material comes from: The Bissekty Formation, Touronian in age from the Kyzylkum Desert. The material is identified as Titanosaurid indet. and has not been assigned to any specific taxon simply because of the lack of diagnostic material. They do comment that vertebrae found in these localities bear affinities to two Chinese sauropods Dongyangosaurus sinensis and Baotianmansaurus henanensis. All of the teeth from Uzbekistan are small, narrow-crowned, 'pencil-shaped' , some with wear facets. Only these type of teeth are know from this region. Scale bars: 1 mm Map of localities were sauropod material was found: Reference: Averianov, A., Sues, H.-D., Review of Cretaceous sauropod dinosaurs from Central Asia, Cretaceous Research (2016), doi: 10.1016/j.cretres.2016.09.006. Doushantuo provide this paper in one of his links, more focused on the Bissekty Fm https://www.researchgate.net/publication/308013044_Sauropod_teeth_from_the_Upper_Cretaceous_Bissekty_Formation_of_Uzbekistan
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